Window screen



April l2 1927.

J. A. CHEWNING WINDOW SCREEN Filed April 24. 1925 2 Sheets-Sheet 2 Patented Apr. 12, 1927.

UNITED STATES PATENT oFFicE'.

JAINES A. CHEWNING, 0F SIKESTON, MISSOURI.

'WINDOW SCREEN.

Application led April 2.4, 1925. Serial No. 25,688.

The invention relates to improvements in window screens.

The object of the present invention 1s to improve the construction of window screens and to provide a simple, practical and etlicient window screen ot' strong, durable and comparatively' inexpensive construction equipped with a metal frame and adapted for use on various kinds of windows.

Another object of the invention is to enabl'e the window screens to be readily assembled and to provide means whereby vthe Wire screen material may be easily stretched and secured inA the metal frame.

Another object of the invention is toenable the wire screen material `to be readily replaced when worn without discarding the metal frame.

Another object of the invention is to provide a metallic window screen adapted for use on passenger coaches and capable of being readily inserted in place when a car window is raised.

lt is also an object of the invention to provide a window screen adapted to be read ily hinged at the top ot' the window to swing outwardly therefrom when access to the exterior'is desired.

lVitli these and lother objects ii'i viewthe invention consists in the construction and novel combination and arrangement ot' parts hereinafter fully described, illustrated in theaccompanying drawings and pointed but in the claims hereto appended, it being understood that various changes in the form, proportion aiid niinor details of construction,

within the scope of the claims, may be rjsorted to without departing from the spirit or sacriiicing any of the advantages of the invention.

In -the drawings: Figure 1 is a side elevation of the metallic window screen constructed in accordance with this invention, a portion of the met-allic frame being in section.

F ig. 2-is an edge vlew of the saine.

lFig. 3 is an enlarged horizontal sectional View lon the line 3 3 of Fig. 1.

.Fig 4 is an enlarged detail sectional View on thev line 4-4 of Fig. 1.

'Fig 5 is a detail perspective view of one 'of the clamps for holding the wire screen material- Fig. 46 is a detail' view of the crimping tongs.

'lianges 4'at lthe inner side.

and 4 of the drawings. top .and bottom channel :members are cut` Fig.` 7 is an elevation of a Window screen showing another form of the invention.

Fig. is. an edge view of the same.

Fig. 9 is a detail view of a portion oi' the hook for removing the clamps when it is desired to replace the wire screen material.

Referring-now particularly to Figs. l to 4 inclusive of tlie drawings in which is illusti'ated. metallic Window screen designed particularly. for use on railway coaclies,'tlie window screen comprises in its construction a metallic frame composed of vertical side members l and connecting horizontal top and bottom members 2 and 3. Each of the frame members is constructed or' suitable sheet metal which lis bent along longitudinal lines to form a channel having longitudinal The channel frame member consists ot" parallel sides, and

lconnecting outer portion and the said flanges 4 which are arranged in v.parallelism with the-.outer portion-as clearly shown in Figs;

away at tlie flanges 4 and the parallel outer portion to provide terminal overlapping ears This vwill adapt-the window screen particularly for use in passenger coaches and simillar conveyances and will obvi'atethe necessity of employing the hinged sectional screen usually required for such windows. Snitable springs may be employed for holding the bottom member 9 normally in an extended position. Tlie bottom members will engage the window sill between the parting strip and `the blind stop but any suitable means may, of course, be employed for retaining the extensible frame in position.

The window screen is equipped with a single, continuousslieet 11 of` wire screen material and the marginal portions Yextend into the channel members of the frame be- The horizontal The metallic screen.

or binding elements 12 consisting of narrow strips of sheet metal bent to form a U- shaped loop 13 and terminal laterally extending flangeslll. The loop receives the marginal portion of the Oscreen material and the lateral extending flanges abut against the longitudinal flanges ot the frame members. The U-shaped portion 13 is crimped into engagement with the screen material by a tool 15 in the iorm ot' a pair of tongs having jaws 1G provided at their contacting faces with triangular lugs 17 and corref lsponding recesses 18. A pair of thelugs 17 is preferably employed and are reverselyar-4 ranged as clearly illustated inFig. 6 to provide the reversed crimps shown in Fi 3 of the drawing. In small screens a sing e lug may he employed. c

In assembling the screens the clamps 12 are applied to two of the marginal edges of the screen and are placed in the respective -)frame members and the other frame meinbers are then assembled to complete the frame. The frame members at the marginal edges of the sheet of material to which the clam s have not yet, been applied are provided) with openings 19 through Vwhich the jaws 16 of the tool 15 with a clamp 12 mayl be passed and the clamp placed on the screen material and crimped. The screen material during this operation is stretched with an ordinary pair of pliers having jawsfsuciently small to pass through the openings 19. The screen material may in this manner stretch to the desired tension and the, `clamps lnay be applied at'intervalsfor se-4 curelyb holding the screen material under such tension. After a clamp4 has been a plied the jaws 16 may be moved lateral y out of engagement with the clamp and Sulli- `ciently beyond the same toen-able the tool to be removed from the o ning 19 without affecting the tightness of t ie clamp.5 Should it be desired to apply new screen material the clamps may be readily removed by means of a hook 2O which may. be introduced through the openings 19 and engaged with the clamps for spreading the sides of the loop 12. The bill 21 of -the hook 20 is beveled laterally to enable it to 4be readily engaged with the clamps. i

In Figs. 7 and 8 of the drawings is illustrated another form of the invention which is adapted for larger windows than the screen shown in Figs. 1 to 4 inclusive. @The screen of this form of the invention is composed of side channel members and top and ottoni channel members similar to that heretofore and in addition has central transverse braces 22 provided with `side flanges 23 which extend across' the space between `the side frame members and terminate there# atl. The side flanges extend inwardly to the screen material and the terminal portions are secured tothe side ,frame members by TheV screen is equipped at the top with hinged elements 23 secured atV their" lower portions to the screen framel by'the upper' corner bolts thereof and having outwardly offset upper portions 24 provided withslots 25 adapted to be engaged with hooks or other hinged elements for supporting these window screens at-the top ofa window. The

4hinged elements are angularly bent at their centers to offset the upper portion 24 as clearly shown in Fig.v 8 of the drawings. The screen frame its equipped at the bottom with a hook 26 hin ed to an eye 27 of the bottom frame memer and adapted toengage a suitable eye 28 of a Windowvsill. When the hook is disengaged tlie'screenis (bolt-s similar to those heretofore described.

adapted to be swung outwardly to afford access to the exterior.

What is claimed is: I l 1. A screen Including a' metallic frame composed of frame members of channel form 1 provided at their inner sides with inwardly extending flanges, a sheet of screen material Vhaving its marginal portions extendingbetween the said flanges and clamps arranged 3 at intervals and consisting of loops embracing the mar inal portions of the said sheet and crimpe thereon 'in the plane of the screen material interiorly of the frame after the said screenmaterial has been placed in ppsitionin the frame and having laterally nt terminals abutting against the flanges of the frame members, said frame beingprovided with openings of a size jto perm1t the r i clamps and a crimping tool to b e assed through them to enable clamfps to becrimped from the exterior ot' the rame after the same has been assembled.

3. A screen including a -metalliclfame'l composed of channel framemembers ha .ing

inwardly extending .longitudinal flangesl in the sidesspaced apart to Aform slots, a sheet'.

o f screen material having its marginal portions extending through the slots' into the frame members, `clamps consisting of-narrow strips of metal bent into approximately l ranged approx U-shape t embrace the mar inal ortions of the screen ma erial and havmg t eir terminals bent later lly to form lugs for abutting against the flanges of the screen frame, said c amps being rovided with reversely arately triangular crimps securing the U-shaped portions to the screen material, said crimps being formed interiorly of the frame after the scrn material has been laced therein and being arranged in the p ane of the screen. material.

4. A screen including a metallic frame composed of channel frame'members having inwardly extending longitudinal langes in the sides spaced apart to form slots, a sheet of screen material having its marginal portions extending through the slot`s"into the frame members,xclamps consisting of narrow strips of metal `bent into approximate 'U- shape to embrace the marginal portions of the screen material and having their termivnals bent laterally to form lugs for abutting against the flanges of the screen frame', sai c amps being provided with reversely arranged approximately triangular erimps securing the U-shaped portions to the screen material formed interiorly of the frame in the plane of the screen material after the same has been placed in the frame, certain of the frame members being provided at the outer sides with openings of a suilicient size to permit the passage of the clamps and a crimping tool to permit clamps to be crimped exteriorly of the frame after the same has been assembled.

In testimony whereof I aiix my signature.'

JAMES A. CHEWNING. 

